The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 50
Hash: 6d7b2f4b3b62d18fdd6b7c1a23f3d63ff666ba8399c4f60b1ea0e56cc8e3d0b2
Previous block: 4464f282a43643bf3de228d09cd920bf130933db1ad16f3f778fa00ff7dfc922
Next block: 369c9192f372f82e0018ec706cb889c24b01150c90e79af349beeec91098e5c7
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597876
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 738dc4dc5bb48378882f620d7f58b836fb535bd9677b1a1fadba4fa7cf26a432
Median time: 1701597875
Difficulty: 4.656542373906925e-10
Confirmations: 2194
Chainwork: 0000000000000000000000000000000000000000000000000000000000000066
Bits: 207fffff